Karen R Ryberg^1,2, Jory S Hecht³, Nancy A Barth², Stacey A Archfield⁴, Annalise G Blum⁵, Katherine J Chase⁶, Robert W Dudley⁷, Angela E Gregory⁸, Glenn A Hodgkins⁷, Steven K Sando⁹ and Thomas R Sando⁶, (1)USGS North Dakota Water Science Center, Bismarck, ND, United States, (2)USGS Dakota Water Science Center, Bismarck, ND, United States, (3)USGS Analysis and Prediction Branch, Reston, VT, United States, (4)US Geological Survey, Reston, VA, United States, (5)Tufts University, Medford, MA, United States, (6)USGS WY-MT Water Science Center, Helena, United States, (7)US Geological Survey, Augusta, ME, United States, (8)USGS Dakota Water Science Center, Bismarck, United States, (9)USGS WY-MT Water Science Center, Helena, MT, United States